Paper-cutting machine.



N. GRAY, JR.

PAPER APPLICATIO I'ILB'D JULY CUTTING MACHINE.

Patented May 16, E910.

3 SHEETS-SHEET 1.

INVENTOR (Wk i ANDREW s GRAHAM on, wow-Lrwocmmeas, WASH-N610). D

N. GRAY, JR.

PAPER CUTTING MACHINE.

APPLICATION FILED JULY 20, 1906.

Z5539 Patented May 19, 1910.

3 SHEETS-SHEET 2.

mill/5555327 Vi BY AUOR/VE ANDREW a. GRAHAM 00.. PHOTO umocmmzns,WASHINGTQMD L N. GRAY, JR.

PAPER CUTTING MACHINE.

APPLIUATION FILED JULY 20, 1906.

Patented May 10,1910.

3 SHEETS-SHEET 3.

MM W

ANDREW a GRAHAM c0 Pnomumosmwus wnsumamn. n. c

an" 5511 Womaug 6 57/ W NIEL GRAY, an, or oswneo, NEW YORK.

PAPER-CUTTING MACHINE.

Specification of Letters Patent.

' Patented May 10, 1910.

Application filed July 20, 1906. Serial No. 327,063.

T all whom it may concern:

Be it known that I, NIEL GRAY, J12, a citizen of the United States,residing at Oswego, in the county of Oswego and State of New York, haveinvented new and useful Improvements in Paper-Cutting Machines, of whichthe following is a specification.

My invention relates to a paper cutting machine and consists in amachine of new construction and mode of operation, whereby the variousparts are operated more conveniently and with greater certainty.

The more important features of my invention are a treadle, a system ofracks. and other connections and a hand operated connection, whereby theclamp is quickly run down onto the paper by the foot and then clamped byhand with a short turn; a sim ple and effective clutch and cooperatingparts, whereby the power is connected to and disconnected from theknife; and a brake for positively and automatically stopping the machineafter the cut to prevent an accidental stroke of the knife.

A desirable embodiment of my invention is shown in the drawing herewith,in which the reference characters of the specification indicate thecorresponding parts in all the figures.

Figures 1 and 2 are respectively front and left side elevations of themachine. Fig. 3 is partial vertical section taken on line 00 of Fig. 1.Fig. 4 is a partial vertical section on line 3/ of Fig. 1. Fig. 5 is ahorizontal cross section on line 2 of Fig. 4. Fig. 6 shows one of therollers of the clutch of Fig. 1. Figs. 7 and 8 are respectively enlargedside and front elevations of portions of Figs. 1 and 3.

In the figures, 1 indicates the main frame or standard of the machine,which may be made as a single casting having upper eX- tensions 2 2 andan arch 8.

6 is the usual table for the paper-pile and a the paper-gage adjustableby screw 5 and wheel 7.

. To lugs 8 on the front faces of the extensions are bolted the guidebars 9, forming guide slots for the knife stock 10 and knife 11,supported and operated on the links 12 with a shearing movement, bymeans of the pitman 18 of adjustable length, connected to the crank onthe counter-shaft and by the various operative parts.

The clamp is moved vertically in the extensions by means now to bedescribed and may be fitted thereto by suitable tongues and grooves. Theclamp carries near each end a rack 19, meshing with rack gears 20,secured on the clamp-shaft 22, journaled in suitable bearings at therear of the extensions near their upper ends.

At one side of the machine, the left as here shown, is hung abell-crank, or treadle, lever 24, having a treadle on its lower arm anda segmental rack 26 on its upper, inwardly extending arm, engaging witha lower rack 27 on the lower end of rack-bar 28, held in position byrollers 30 in brackets 31. 32 on the frame. These rollers may be formedwith circumferential tongues fitting a vertical tongue on the rack-bar,or the tongue and grooves may be reversed. The arms of the treadle-levermay be secured, as here shown, on opposite ends of treadleshaft 33 inbearing 34. Connected to the treadle-lever at any convenient point is anexpansion spring 35, fitted to guiding studs 36, whereby the clamp isbalanced. By this means, when the treadle is depressed by the foot theclamp is brought down on the table, or on the pile of paper, but whenthe foot is removed, the spring restores the clamp to top position,through the treadle and connections.

At about the center of the clamp shaft 22 is bolted rigidly to the framethe worm-gear case 40, inclosing a hard steel hub ll keyed on the clampshaft, and turning freely with in a worm-gear 4-2, meshing with a worm43 on a worm-shaft 4.4L, carrying the handwheel 45 and journaled in asuitable vertical bearing 46. In the inner periphery of the worm-gearare formed cam-slots 48, provided with hardened steel plates 47, forrollers 49, whereby when the treadle is depressed by the foot, therollers assume the position shown in Fig. 1-, and the clamp shaft andhub turn freely in the worm-gear 42, but when the clamp has so beenbrought down on the paper pile, the hand-wheel is given a partial turn,whereby the rollers are turned back into the narrow end of their camslots and the worm-gear is locked to the hub 41, and the clamp firmlyforced down on the pile. Thus the clamp is set down hard on the papervery quickly and conveniently by the use first of the treadle and thenof the handle. A short back turn of the handwheel releases the rollersand permits the spring to return the clamp to top position.

As best shown in Fig. 6, the rollers may have a pin 52 and spring 53fitting a socket in one end to produce a slight friction on the sides ofthe gear case, causing the rollers to drag. Each roller and pin ispreferably formed with a rounded end to engage with the gear case, toact as a friction pivot around which the roller rotates.

Referring to Figs. 3, 7 and 8 in connection with Fig. 1, for theconstruction of the driving mechanism, the knife clutch and brake thefiy wheel 56 and pulley 57are operated continuously from any suitablesource of power, while the driving shaft 58 is stationary, except whenconnected thereto to operate the knife. On the end of said driving shaftis a pinion 60 meshing with main knife-gear 61 on counter-shaft 62,carrying crank-wheel 63, connected to the knife-stock by pitman 13. Tothe fly wheel 56 is bolted by bolts 66 the clutch-ring, or outer clutchmember, 67, turning freely on the driving-shaft 58, except when lockedthereto by clutch band-spring, or inner clutch member, 69, which isexpanded frictionally to engage with the clutch-ring by the operation ofcone 7 O, sliding on the driv ing shaft but connected to turn therewith,which is moved back (to the right as shown in Fig. 3) by means ofshifter-yoke 71, fixed on shifter-rod 7 2, moved in bearings 7 4 intoengaging position by the operation of a flat spring 73, or other similarmeans. The clutch spring 69 is fixed at end a on its supporting hub 75but free at end Z). A curved lever 76, hung on said supporting hub 75,has a stud 77 engaging with said free end I) and an adjustable set-screw78 on its free, lower end to engage with the sliding cone 70, "wherebywhen the cone is shifted, the clutch-spring 69 is expanded and forcedout into frictional engagement with clutch ring 67, the driving-shaft isconnected to the pulley, and the knife is operated.

The spring 73 is free to shift the shifterrod and the cone only when thestarting handle 80 is depressed by the following arrangement of parts.When said handle, pivoted at point 81, is depressed, the stopwedge 82,hung on the rear end of the handle lever, is raised, bringing theincline 84 into alinement with the stop-wedge collar 95 on the shiftingrod, having a similar incline, permitting the cone and the clutch to beshifted gradually, but quickly, into engaging position by the spring 73.

Automatically, to stop the operation of the knife, a rear projection,preferably in the form of an antifriction roller 88, is arranged on thelower end of the stop-wedge and engaging with the front face of the maingear 61. A cam notch 89 is formed in said front face at a point where itwill come into alinement with said roller, when the knife has nearlyreached the top of its up return stroke. The lower end of the stop-wedgethen swings outwardly into the notch, and instantly drops therein by itsown weight, raising the handle to its original position. As the maingear continues to revolve, the stop-wedge roller having arrived in suchlow position, whereby the incline 8A is below the line of the stop-wedgecollar 85, is forced forward, or out of the notch 89 onto the high, orplane, surface of the main gear, thus forcing the stopwedge,shifting-rod and yoke into initial position, whereby the clutch isreleased and the knife stopped.

Positively to insure the stopping of the machine and the danger of anaccidental return of the knife (see Figs. 7 and 8), a friction brake isprovided to stop the rotation of the driving-shaft 58. On said shaft issecured a brake-collar 92. A friction ring 93, preferably fiber lined,and having a projecting lug 94:, is arranged to encircle saidbrake-collar and is preferably split and provided with a pinch bolt 95to regulate its friction on the brake collar. A brake-lever 96,pivotally supported at 97, and connected to the hand-lever by connection98 is initially in the path of said lug. hen the hand-lever is depressedand the stop-wedge raised, said brake-lever is raised out of the path ofthe lug and the brake-collar and the friction-ring revolve freely asone, but when the hand-lever is returned to its initial position by themeans aforesaid, the brake-lever drops and engages with the lug,stopping the friction-ring, and thus applying a frictionbrake to thedriving-shaft, and positively stopping the knife.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a paper cutting machine, the combination with a suitable frame andpaper supporting table, of the paper clamp fitted to slide between theupper extensions of the frame, racks on the rear face of the clamp, ahorizontal clamp-shaft journaled on the frame, gears secured on saidshaft and meshing with said racks, a bell-crank lever supported in ajournal bearing on the frame and having a downwardly extending, frontarm and a rearwardly extending, upper arm, a treadle on said lower arm,a segmental-rack on said upper arm, a vertically arranged rack-barhaving an upper rack meshing with one of said gears and a lower rackmeshing with said segmental-rack, a hub secured on the clamp-shaft, aworm-gear fitting around the hub and having cam slots formed between itsinner periphery and the periphery of the hub, a worm-gear ease securedon the frame and inclosing the worm-gear, rollers arranged in the camslots to bind therein and lock the worm-gear to the hub when the worm isturned in the direction to rotate the clampshaft to depress the clamp, avertical bearing on the front of the frame, a worm-shaft in saidbearing, a handwhcel in the upper end of said shaft, and a worm on thelower end of said shaft meshing with the Worm-gear, substantially asdescribed and shown.

2. In a paper cutting machine, the com bination with a suitable frameand paper supporting table, of the paper clamp fitted to slide betweenthe upper extensions of the frame, racks on the rear face of the clamp,a horizontal clamp-shaft journaled on the upper portion of the frame,gears secured on said shaft and meshing with said racks, a bell-cranklever having a treadle on its downwardly extending front arm and asegmental rack on its rearwardly extending upper arm, a spring to returnthe bell-crank lever to initial position, a vertically arranged rack-barhaving an upper rack meshing with one of said gears and a lower rackmeshing with said segmentalrack, means to maintain said rack-bar invertical or operative position, a hard steel hub secured on theclampshaft about at its center, a worm-gear having its inner peripheryfitting the hub and cam slots formed in said inner periphery, a wormgearcase bolted on the rear of the frame and inclosing the worm-gear,rollers arranged in the cam slots to bind therein and lock the worm-gearto the hub when the worm-gear is turned in the direction to rotate theclamp-shaft to depress the clamp, a pin and spring fitted to a socket inone end of each roller, each pin and the opposite end of each rollerbeing formed with rounded ends to form pivotal bearings, a worn1shaftsup ported on the frame, a handwheel on said worm-shaft, and a worm onsaid worm-shaft meshing with the worm-gear, substantially as describedand shown.

3. In a paper cutting machine, the combination with a suitable frame andpaper supporting table, of the paper clamp fitted to slide between theupper extensions of the frame, racks on the rear face of the clamp,

a'horizontal clamp-shaft journaled in rear bearings on the upper ends ofsaid extensions, gears secured on said shaft and meshing with saidracks; a bell-crank lever composed of a lever shaft ourna-led in abearing on the front of the machine at one side, of a downwardlyextending, front arm fixed on the inner end of the lever shaft and of arearwardly extending, upper arm fixed on the outer end of the levershaft, a treadle on said lower arm, a segmental-rack on said upper arm,a spring supported on the frame and engaging with said front arm toreturn the segmental-rack to initial or lower position, a verticallyarranged rack-bar having an upper rack meshing with one of said gearsand a lower rack meshing with said segn'iental-rack, upper and lowerbrackets on the rear of the frame, rollers in said brackets to engagewith the rack-bar to maintain it in position, a hard steel hub securedon the clamp-shaft at its center, a worm-gear having its inner peripheryfitting the hub and cam slots formed in said inner periphery, aworm-gear case bolted on the rear of the frame and inclosing thewormgear, rollers arranged in the cam slots to bind therein and lock theworm-gear to the hub when the worm-gear is turned in the direction torotate the clamp-shaft to depress the clamp, a pin and spring fitted toa socket in one end of each roller, frictionally to engage with thefaces of the gear case, each pin and the opposite end of each rollerbeing formed with rounded ends to form pivotal bearings, a verticalbearing on the front of the frame, a worm-shaft in said earing, ahandwheel in the upper end of said shaft, and a worm on the lower end ofsaid shaft meshing with the worm-gear, sub stantially as described andshown.

4. In a paper cutting machine, the main frame, the knife-stock and knifefitted to the frame, links supporting the knife, a counter-shaft, acrank on said counter-shaft, a pitman connecting the crank to the knifestock, a driving-shaft, a pinion on the driving-shaft, a main gear onthe counter-shaft meshing with said pinion, a fly-wheel and pulleyfitted to turn on the driving-shaft, means to rotate the fly-wheel andpulley and in combination therewith an outer clutch member secured onthe fly wheel, an inner clutch member on the drivlngshaft, a cone fittedto slide on and to turn with the driving-shaft, a shifterrod supportedin bearings on the frame, a shifter-yoke secured on said rod andengaging with said cone, a spring tending to move said rod and conetoward the clutch to force the inner clutch member into engagement withthe outer member, a starting-lever pivotally supported on the frame, astop-wedge having an incline hung on the rear of the lever, a stop-wedgecollar fixed on the shifter-rod and having :1 corresponding incline anda rear projection on the stopwedge adapted to enter a cam-notch on thefront of the main gear when the knife is nearly at the top of its returnstroke.

In a paper cutting machine, the main frame, the knife-stock and knifefitted to the frame, links supporting the knife, a countershaft, a crankon said counter-shaft, a pitman connecting the crank to the knife-stock,a driving-shaft, a pinion on the drivingshaft, a main gear on thecounter-shaft meshing with said pinion, a fly-wheel and pulley I fittedto turn on the driving-shaft, means to rotate the fly-wheel and pulleyand in combination therewith a clutch ring secured on the fly-wheel, ahub secured on the drivingshaft, an expansible band-spring arrangedwithin the clutch ring and having one free end and one end secured onsaid hub, a curved lever hung on said hub and having a stud to engagewith the free end of said band spring and its free end adapted to engagewith a cone sliding on the drivingshaft, said cone fitted to turn withthe driving-shaft, a shifter-rod supported in bearings on the frameparallel to the driving shaft, a shifter-yoke secured on said rod andengaging with the cone, a spring to force the yoke and cone toward theclutch ring to expand the band-spring, a starting handle pivotallysupported on the frame, a stopwedge having an incline hung on the rearend of the handle lever, a stop-wedge collar fixed on the shifter-rodand having a corresponding incline, and a projection on the stop-wedgeadapted to enter a cam-notch on the front of the main gear when theknife is nearly at the top of its return stroke, substantially asdescribed and shown.

6. In a paper cutting machine, the combination with a suitable frame, ofthe knife supported thereon, a driving-shaft, operative connectionsbetween the said shaft and knife, a power wheel, or pulley, turningfreely on the shaft, a clutch to connect said wheel to the shaft whenthe knife is to be operated, a starting lever to operate said clutch, abrake collar on the driving-shaft having a fiber surface, a split ringencircling said brake-collar, a pinch bolt to regulate the friction ofthe split ring on the collar, a projecting lug on the split ring, abrake lever hung on the frame and normally in the path of the said lug,and a connection from the brake-lever to the starting-lever to raise thebrake-lever out of the path of the lug when the lever is depressed toput the knife into operation, substantially as described and shown.

7. In a paper cutting machine, the combination with a suitable frame, ofthe knife supported thereon, a driving-shaft journaled in the frame,operative connections between said shaft and knife, a power wheelturning freely on the shaft, a clutch to connect the wheel to the shaftwhen the knife is to be operated, a starting-lever to operate theclutch, a brake-collar on the driving-shaft, a ring surrounding saidcollar and in frictional engagement therewith, a projecting lug on thering, a brake-lever hung on the frame normally in the path of the lug,and a connection bet-ween the brake-lever and the starting-lever toraise the brake-lever out of the path of the lug when the lever isdepressed to putthe knife into operation.

8. In a paper cutting machine, the main frame, the knife-stock and knifefitted to the frame, links supporting the knife, a counter-shaftsuitably ournaled, a crank on said counter-shaft, a pitman connectingthe crank to the knife-stock, a driving-shaft suitably journaledparallel to the countershaft, a pinion on the driving-shaft, a main gearon the counter-shaft in mesh with said pinion, a fly-wheel and pulleyfitted to turn on the driving-shaft, means to rotate the fly-wheel andpulley, and in combination therewith a clutch ring secured on theflywheel, a hub secured on the driving-shaft, an expansible band-springarranged within the clutch ring and having one free end and one endsecured on said hub, a curved lever hung on said hub and having a studto engage with the free end of said band-spring and an adjustableset-screw at its free end to engage with a cone sliding on thedrivingshaft, said cone fitted to turn with the driving-shaft, ashifter-rod supported in bearings on the frame parallel to thedrivingshaft, a shifter-yoke secured on said rod and having a forked endengaging with an annular groove in the cone, a spring tending to forcethe yoke and cone toward the clutch ring to expand the band-spring, astartinglever pivotally supported on the frame, a stop-wedge having anincline hung on the rear end of the starting-lever, a stop-wedge collarfixed on the shifter-rod and having a corresponding incline, arearwardly projecting antifriction roller on the lower end of thestop-wedgeadapted to enter a camnotch on the front of the main gear whenthe knife is nearly at the top of its return stroke, a brake-collar onthe driving-shaft having a fiber surface, a split ring encircling saidbrake-collar, a pinch bolt to regulate the friction of the split ring onthe collar, a projecting lug on the split ring, a brake lever hung onthe frame and normally in the path of the said lug and a connection fromthe brake-lever to the starting-lever to raise the brake-lever out ofthe path of the lug when the lever is depressed to put the'knife intooperation, substantially as described and shown.

9. In a paper cutting machlne, the combi-.

nation with a suitable frame and a paper supporting table, of a paperclamp suitably arranged, a bell-crank lever suitably journaled andhaving a downwardly extending front arm and a rearwardly extending upperarm, a treadle on said lower arm, a clamp shaft, connect-ions betweenthe clamp shaft and the clamp whereby the clamp may be depressed by therotation of the shaft, connections between the upper arm of thebellcrank lever and the clamp shaft whereby the clamp shaft is rotatedto lower the clamp upon the depression of the treadle, a hub secured onthe clamp shaft, a worm gear fitting around the hub and having cam-slotsformed between its inner periphery and the periphery of the hub, a wormgear case secured on the frame and inclosing the worm gear, rollersarranged in the cam slots to bind therein and lock the worm gear to thehub when the worm gear is turned in the direction to rotate the clampshaft to depress the clamp, a worm-shaft suitably journaled, a handwheel on said shaft and a worm on said shaft meshing with the worm gear.

10. In a paper cutting machine, the main frame, the knife-stock andknife fitted to the frame, a counter-shaft, connections between thecounter-shaft and the knife-stock whereby the knife is operated on therotation of the counter-shaft, a drivingshaft, connections between thecounter-shaft and the driving-shaft, a pulley journaled on the drivingshaft, a clutch member secured to the pulley, a cone operated secondclutch member secured to the driving shaft and adapted to be forced intofrictional engagement with the first clutch member by the cone, a coneslidably arranged on the driving shaft, a shifter-yoke suitably arrangedand adapted to move the cone into and out of operative position, aspring tending to operate the shifter-yoke to move the cone intooperative position, to force the clutchmembers into engagement, astarting-lever pivotally supported on the frame, a stop wedge hung onthe rear of the lever, said wedge being arranged to hold the shifteryoke inoperative against the tendency of the shifter-spring when innormal lower 45Zposition, and to permit the shifting of the yoke by thespring when elevated by the starting lever and means to permit thestopwedge to drop into lower position immediately after the operation ofthe knife and means then operative to return the said wedge to itsnormal position against the tension of the spring to throw the cone outof engagement.

11. In a paper cutting machine, the combination with a suitable frameand paper supporting table, of the paper clamp, a clamp-shaft,connections between the clampshaft and the clamp to operate the clampupon the rotation of the shaft, means to depress the clamp, a hubsecured on the clamp shaft, a manually operated member fitting aroundthe hub and provided with cam slots on its inner periphery, a stationarycase inclosing said member and rollers interposed between said hub andmember within said slots to bind therein and lock the member to the hubwhen rotated in the direction to cause depression of the clamp.

12. In a paper cutting machine, the combination with a suitable frameand paper supporting table, of the paper clamp, a clampshaft,connections between the clampshaft and the clamp to operate the clamp onthe rotation of the clamp-shaft, means antomatically to rotate saidshaft to depress the clamp, a hub secured on the clamp-shaft, anoperating gear fitting around the hub and provided with cam slots on itsinner periphery, a stationary case inclosing said hub and gear, rollersinterposed between said hub and gear within said slots to bind thereinto lock the gear to the hub when rotated in the direction to causedepression of the clamp, a pin and spring fitted to a socket in the endof each roller whereby the rollers are caused to engage at either endwith the inclosing case, and manually operated means to rotate said gearwhereby the clamp is depressed.

13. In a paper cutting machine, the combination with the frame and theknife, of a driving shaft, connections between the driving shaft and theknife to operate the knife, a driven member, a clutch adapted to couplethe driven member to the drive-shaft to operate the knife, clutchoperating means normally tending to throw the clutch into operativeengagement, an engaging element rotatably connected to the driveshaftand provided with an elevated and a. depressed portion, a stop-wedgeinterposed in position to be actuated by the elevated portion to disengage the clutch from operative engagement, a starting lever connectedto the wedge whereby the Wedge is withdrawn to permit the engagen'ientof the clutch, said stop wedge being arranged to be held in inop erativeposition during the engagement of the elevated portion and to return toits operative position by engagement with the depressed portion wherebythe drive-shaft will be disconnected upon reengagement with the elevatedportion.

14. In a paper cutting machine, the combination with the frame and theknife, of a driving shaft, connections between the driving shaft and theknife to'operate the knife, a driven member, a clutch adapted to couplethe driven member to the driveshaft to op erate the knife, clutchoperating means normally tending to throw the clutch into operativeengagement, means to disconnect the clutch at the end of each strokecomprising a stop-wedge normally in a position when actuated todisconnect the clutch from op erative engagement, means to actuate thestop wedge at the end of each stroke, a starting lever, connectionsbetween the starting esj lever and the stop-Wedge to Withdraw saidconnections between said arm and the start Wedge from operative positionto permit ening lever to Withdraw said arm from the gagement of theclutch said Wedge being path of the lug. permitted to return to itsinitial position In testimony whereof I have signed my 5 immediatelybefore the end of the knife name to this specification in the presenceof 1-5 stroke, a brake member fixed to the drivetwo subscribingWitnesses.

shaft, a journaled brake member in fric- NIEL GRAY, JR. tionalengagement with the brake member, Witnesses: a lug on the journaledmember and a pivotal W. H. TEST,

10 arm arranged in the path of the lug and JENNIE H. WILooX.

